Moderately heavy to heavy falls are likely at places over the country during the period, reports UNB quoting the Met office.It forecast that day and night temperature may rise slightly over the country.The sun sets in the capital on Monday at 5:45 pm and rises on Tuesday at 05:51am.The country's highest temperature 33.8 degree Celsius was recorded on Sunday in Feni and the lowest 22.6 degree in Dinajpur.